{"nhtsa_id":11035453,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-08-01","date":"2026-07-21","document_id":"662.30","mfr_campaign":"662.30","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"ARB, TCM, ECM: ARB (Articulated Running Boards), ECM (Engine Control Module), TCM (Transmission Control Module)","summary":"• Improvements to reliability when extending the running boards on your vehicle. • Improvements to start reliability and reduced check engine light activation. • Improvements to turbo system diagnostics. • Improves transmission diagnostic software. • Reduces unnecessary check engine light activations.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035453-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035453-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11035453","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_gmc_sierra"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}